Pipe length for .12 motor

shop deals on amazon
Shop deals on ebay
Advertise with us
Intlwaters

Help Support Intlwaters:

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
Mark Leyde

Mark Leyde

Club Racer
Joined
Dec 23, 2006
Messages
1,571
My son and I have finaly finished his .12FF. We have a 2.5cc Macs pipe and a Dynamite .12spd motor. What would be a good pipe length to start with for this combo? Also from where to where do we measure the length?

Thank you,

Mark and Mitch
 
Last edited by a moderator:
Hey Guys,

Technically you are supposed to measure "as the gases flow" this wouldn't matter if we all used the same headers LOL. I wan to say mine is at 7.5 incehs it could probably stand to be shortend a little but its consistent and finally quit eating plugs.
 
hydroracer11g said:
My son and I have finaly finished his .12FF. We have a 2.5cc Macs pipe and a Dynamite .12spd motor. What would be a good pipe length to start with for this combo? Also from where to where do we measure the length?
Thank you,

Mark and Mitch
Click to expand...
I always measure from the plug or center of engine following the header back to the widest part of the pipe. My guess would be to start at approx 7- 3/4" to 8" max and you can cut down from there. An easy way to measure is to use a length of solder to follow the manifold then straighten it out to measure. Hmmm, I just checked mine and it looks more like 8-1/4". It's the same pipe you're using but on an OS 12TR rear exhaust and seems to work well with a 1640.

Don ;)
 
Last edited by a moderator:
Not trying to hy-jack the thread but, Don you say you've had good luck with the 1640. What hull are you running?? I am running the 1440 b/c and would like to continue trying some other props.
 
Hi Zach,

If ya click on Don's Webpage he is running a Riptide, he does have alot of pics of his boat there also (look at the bottom of his post for the link).

Paul
 
ek kustomz said:
Not trying to hy-jack the thread but, Don you say you've had good luck with the 1640. What hull are you running?? I am running the 1440 b/c and would like to continue trying some other props.
Click to expand...
Hello Zach,

The only reason I can run the 1640 with a ton of cup is the center skid plate over the stuffing tube. But keep in mind it's not adjustable so you have to get it just right or change your sponson set up on the front.

Don ;)
 
I just finished a couple of different .21 pipes for use with 180 headers.

Would you guys be interested in a .12 version?

Pics can be seen at cmdracing.com
 
I'd be down for one. Could you make it adjustable with removeable sections like you used to see on car pipes??
 

Similar threads

Bryan calabrese
Gas pipe setup
2
Replies
26
Views
6K
David Swisher
D
Martin Law
Guys in SE FL Looking for Assistance
Replies
5
Views
1K
john v
J
ChrisHerzog
Sold (New price) 1/8th Scale nitro boat for sale.
Replies
9
Views
1K
ChrisHerzog
ChrisHerzog
U
Parts For Sale Misc pipes mounts starter wheels cowl locks
Replies
3
Views
1K
Greg Rowe
G
Davidkrienke
Pipe length and prop recommendation. stealth with old Rossi gold head .R21 outboard with irwin pipe.
Replies
5
Views
1K
jaxracer
jaxracer

Latest posts

Back
Top